[U-Boot] [PATCH v3] driver: spi: fsl-qspi: disable AHB buffer prefetch

[york sun]

On 07/12/2016 07:24 PM, Yunhui Cui wrote:
>
> On 07/12/2016 11:15 PM, York wrote:
>> On 07/11/2016 08:00 PM, Yunhui Cui wrote:
>>> From: Yunhui Cui <yunhui.cui at nxp.com>
>>>
>>> Errata: A-009282: QuadSPI data pre-fetch can result in incorrect data
>>> We need this errata workaround when CONFIG_SYS_FSL_QSPI_AHB is enabled.
>>>
>>> Signed-off-by: Yunhui Cui <yunhui.cui at nxp.com>
>>> ---
>>>    drivers/spi/fsl_qspi.c | 12 +++++++++++-
>>>    1 file changed, 11 insertions(+), 1 deletion(-)
>>>
>>> diff --git a/drivers/spi/fsl_qspi.c b/drivers/spi/fsl_qspi.c index
>>> 75cbab2..0354e20 100644
>>> --- a/drivers/spi/fsl_qspi.c
>>> +++ b/drivers/spi/fsl_qspi.c
>>> @@ -438,13 +438,23 @@ static void qspi_enable_ddr_mode(struct
>> fsl_qspi_priv *priv)
>>>    static void qspi_init_ahb_read(struct fsl_qspi_priv *priv)
>>>    {
>>>    	struct fsl_qspi_regs *regs = priv->regs;
>>> +	int rx_size = 0x80;
>>
>> Wrap this with ifdef, or you will have compiling warning when the macro
>> is not defined.
>>
>> York
>
> [Yunhui] Whether This macro defined or not, rx_size will be used, It seems that Wrap is not necessary and have no compiling warning.

OK. That's fine.

York